<div class="post-input">
    <div class="virtual"></div>
    <div class="real">
        <textarea placeholder="输入内容"></textarea>
        <button>发布</button>
        <div class="attach none-attach"></div>
        <div class="tags-bar">
            <input type="text" class="tags" placeholder="标签">
        </div>
        <span class="close">返&nbsp;&nbsp;&nbsp;&nbsp;回</span>
    </div>
</div>